Circular cutter with 45 mm blade to cut cleanly to the nearest millimeter 4 to 8 patchwork fabrics. This rotary knife only pushes the blade in the cutting position after tightening the handle. When the handle is released, the blade returns to the initial position. A blocking maintains if necessary the blade in the working position. Easy blade enclosure in the blink of an eye. The blade is safe when it is not used. Conceived for right -handers as for left -handers.